Renntech released their Diesel software for the E90 BMW 335d as well as the E70 X5 xDrive35d both equipped with the turbo M57 diesel six-cylinder motor. Renntech provided BimmerBoost with their dyno runs and the highest baseline was chosen to display on the graph along with the peak tuned figures in SAE correction. Renntech claims gains of up to 65 crank horsepower and 54 crank pound-feet of torque.

The dynojet results gains of 57 wheel horsepower and 33 pound-feet of torque from the higher baseline backing up Renntech's claims. The software retails for $1200. Very nice done Renntech.

Mines clocked 70 whp with OLD tune, I beleive it has more since Lenny reconfigured it the last time I went to them, Yes RENNtech does not mess around, having Lenny aboard whom happens to have a 335i, you figure it out!! Anyway, like before I have used RENNtech since 2003 or 2004 on my 02 MCS and now my 2011 335d, there are other good tuners but I will stick with them, thier product has been bulletproof for 9 years with me,

hifiguy if youre a racer like me you will loose some MPGs currently Im getting anywhere from 22-23 mpg city and HOLD ON to this anywhere from 40-46 mpg hwy yes amigo you read that right BUT mind you i have the WAGNER IC which helps improve more cooler air to the turbos but if i did not have the WAGNER IC it would of been anywhere from 36-40 mpg hwy but same in the city as above give or take

hifiguy if youre a racer like me you will loose some MPGs currently Im getting anywhere from 22-23 mpg city and HOLD ON to this anywhere from 40-46 mpg hwy yes amigo you read that right BUT mind you i have the WAGNER IC which helps improve more cooler air to the turbos but if i did not have the WAGNER IC it would of been anywhere from 36-40 mpg hwy but same in the city as above give or take

I don't think that SAV has seen many speeds below 60.

Dang, hombre! 36-46 hwy?! Now I got two mods to worry about. Sounds great though, especially if I ever find a used aluminum trailer to tow my m3.

I tell ya the IC does actually improve your mileage and to be honest I havent lost mpgs either city or hwy, hwy has increased and city has stayed the same 20-23 depending on my LEAD foot!! once u do it you WONT go back to stock, now its your turn to convince the misises, I hv a fello "D" form another post going in for the kill also, this time we're looking at the DPF removal Lenny has come up with so STAND By, STICKY knows whats going on, until Lenny or Hartmut from RENNtech give me the ok DONT ask many questions, this is in the works!!!

Water meth on the diesel, interesting, haven't really seen anyone do it.

Its extremely common in the truck scene as the diesels tend to react very well to it, and there are a few folks running a setup on the 3er (TDIwyse did a custom setup and now BMS has started to offer their WW kit to the diesel crowd). Almost every oneof the truck folks i associate with are running either a performance or mpg tune in combo with Snow Performance's mpg max kit (which is adding power & efficiency to their tune and cleaning their engine to boot). Molecularly speaking, water is carbon buildups worst enemy which is another reason why I find the option so appealing.

Its extremely common in the truck scene as the diesels tend to react very well to it, and there are a few folks running a setup on the 3er (TDIwyse did a custom setup and now BMS has started to offer their WW kit to the diesel crowd). Almost every oneof the truck folks i associate with are running either a performance or mpg tune in combo with Snow Performance's mpg max kit (which is adding power & efficiency to their tune and cleaning their engine to boot). Molecularly speaking, water is carbon buildups worst enemy which is another reason why I find the option so appealing.

AFAIK it's only Ron1n (who acted as Burger's guinea pig for the BMS WW kit) and TDIwyse (custom setup using a combo of a custom programmed JBD, Evolve Tune, and an off the shelf meth controller plugged in to MAP). I don't know of anyone running meth in conjunction with the RENNtech tune, though, and I think anyone taking it on now still qualifies as either a frontierman or at least an early adopter

My guess is that the RENNtech with meth would produce similar results to TDIs setup (with which he was running 12.6s on standard tires). If only we could get a good DPF delete tune stateside, we may be able to push beyond this.